Sohl and Koch OFR # 534 (Cretaceous of the United States)

Also known as Hope; USGS # 8214

Where: Hempstead County, Arkansas (33.8° N, 93.6° W: paleocoordinates 38.4° N, 70.8° W)

• small collection-level geographic resolution

When: Arkadelphia marl Formation, Maastrichtian (72.1 - 66.0 Ma)

• Haustator bilira assemblage zone.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, silty lime mudstone

Size class: macrofossils

Preservation: original calcite

Reposited in the USGS

• Stephenson collection

Primary reference: N. F. Sohl and C. F. Koch. 1984. Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain. USGS Open File Report 84-687:1-282 [M. Kosnik/M. Kosnik]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4388: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Lithophagidae indet.
Lithophagidae indet.
Lithophagid borings
Demospongiae
 Clavulina - Clionaidae
Cliona sp.
Cliona sp. demosponge
Clione sp.
Polychaeta
 Sabellida - Serpulidae
Serpula sp.
Serpula sp. Linnaeus 1758
Serpula sp.
Cephalopoda
 Ammonitida - Scaphitidae
Discoscaphites sp.
Discoscaphites sp. Meek 1870 ammonite
Discoscaphites sp.
Gastropoda
 Sorbeoconcha - Aporrhaidae
Anchura sp.
Anchura sp. Conrad 1860 snail
Anchura sp.
Bivalvia
 Ostreida - Gryphaeidae
Gryphaeostrea vomer, Pycnodonte vesicularis, "Exogyra costata" = Exogyra (Exogyra) costata
Gryphaeostrea vomer Morton 1828 oyster
Gryphaeostrea vomer Morton
Pycnodonte vesicularis Lamarck 1806 oyster
Pycnodonte vesicularis Lamarck
"Exogyra costata" = Exogyra (Exogyra) costata Say 1820 oyster
Exogyra costata Say
 Carditida - Crassatellidae
Crassatella sp.
Crassatella sp. Lamarck 1799 clam
Crassatella sp.